For jobs submitted on behalf of a group, all members of that group should have the same level of access as the job owner.
http://gerrit.beaker-project.org/#/c/1962/
Verified. Submit a group job and another user in the group can edit the Whiteboard/Retention Tag/Product of the job, and can cancel/delete the job as the job owner. version:beaker-server-0.12.1-1.git.177.5d4e6bf.el6.noarch,beaker-server-redhat-0.1.14-1.el6eng.noarch
Beaker 0.13.1 has been released.